TY  - BOOK
AU  - Williams Michael
TI  - Wetlands:  A threatened landscape   
T2  - Institute of British Geographers: Special Publication Series^b25
U1  - U217, N0 
PY  - 1990///
CY  - Massachusetts
PB  - Basil Blockwell         
KW  - Wetland Geography
N1  - Bibliography:P356-392
ER  -